function util() {
  this.flag = true;
  var body = document.body;
  var safe = this;
  var validVersion = function () {
    var browser = navigator.appName
    var b_version = navigator.appVersion
    var version = b_version.split(";");
    var trim_Version = version[1].replace(/[ ]/g, "");
    if (trim_Version == 'WOW64') {
      safe.flag = false
    } else if (browser == "Microsoft Internet Explorer" && trim_Version == "MSIE6.0") {
      safe.flag = false
    } else if (browser == "Microsoft Internet Explorer" && trim_Version == "MSIE7.0") {
      safe.flag = false
    } else if (browser == "Microsoft Internet Explorer" && trim_Version == "MSIE8.0") {
      safe.flag = false
    } else if (browser == "Microsoft Internet Explorer" && trim_Version == "MSIE9.0") {
      safe.flag = false
    }
  }
  this.setBody = function () {
    var str = '<div class="el-tip el-tip--warning" id="tip">' +
      '<div class="el-tip_content">' +
      '<span class="el-tip__title">' +
      '您乘坐的浏览器版本太低了,你可以把浏览器从兼容模式调到极速模式' +
      '<br /> 实在不行就换浏览器吧;' +
      '</span>' +
      '<div class="el-tip_img">' +
      '<img src="/util/screen/huohu.png" alt="">' +
      '<img src="/util/screen/guge.png" alt="">' +
      '</div>' +
      '</div>' +
      '</div>';
    body.innerHTML = str + body.innerHTML
  }
  this.init = function () {
    validVersion(); //检测浏览器的版本
    return this;
  }
}

var creen = new util().init();
var flag = creen.flag;
if (!flag) {
  creen.setBody();
}
